How to fix dead LCD backlight and change CCFL to LED on display panels

How to change dead LCD panel CCFL backlight to LED.
This was fixed on a Yamaha PSR-3000 but I have done this many times on several keyboards & other old CCFL and electroluminescent displays. The music played at the end of the video is Yamaha's built in Demo from the Yamaha PSR-3000 keyboard.

[@t9cstudio]

Thanks for this Markus. I'm working on a Roland E-600 after repairing the SMPS, I've found there's no backlight on the display. Your video gives me the needed encouragement to go ahead and try to fix it.

[@andyfrankland-davies2164]

There's no chance of me fixing my Triton LE screen ;) but that was awesome to just chill and watch someone who does know what they’re doing (or works it out) cheers buddy!

[@mswaney81]

I'm so happy I stumbled onto your channel some years back. I really enjoy seeing your work and your methods of problem solving are inspiring. Thank you for creating content.

[@benjahnz]

Really enjoyed that video. Your stress free approach to electronics repair is awesome. Looking forward to more vids.

[@EdwinSL]

You are the Bob Ross of electronic music, awesome.

[@Pvaeerener]

Man... How smart a move... It's been such an original and creative way to go, Markus... 😵

[@cleaver4951]

Extraordinary work! You have such knowledge and inventiveness - I'm in awe!

[@alandixon7248]

Excellent fix Marcus. Love the diode probe.

[@pbartmess]

Thanks for sharing details about the 7809 - you explain things like that very clearly for beginners like me!

[@markusfuller]

Thank you Patrick.

[@1966Manjit]

just amazing and the level of detail .. great job

[@enlnh]

Love watching your videos, not sure why but they're relaxing and retain my interest. Don't stop!

[@markusfuller]

Thank you, I really do appreciate every viewer.

[@R55320]

Hi Sir I just want to ask you are you from UK???

[@usatrene]

A true magic show. Genius, Markus.

[@douglasdifranco5879]

Learned a lot in this one, excellent work!

[@ProgRockDreams]

Your knowledge on repairs is beyond me, I've been stuck out of Australia for over 2 years due to the covid travel restrictions, finally got my Yamaha psr 660 out of storage and the led display very faded. I thought oh no... watched you video and 5 minutes in I thought I'd never be able to do what you are doing... but you did manage to find a way to fix the issue just after you'd put everything back together - the moment 90% into the video you said adjust the contrast the aha moment hit me! There was the issue with my display, contrast needed to be adjusted with the simple knob at the rear of the keyboard!!!! Thank you. Loved watching the video and you're a genius removing all the boards and creating an led lighting set-up. Thank goodness I didn't attempt all that. Thanks.

[@1942Grampz]

Superb Mark, Just spotted this now. I have a Yamaha EL90 with same problem, I am going to have a go at. This gives people great ideas, thank you.

[@mCKENIC]

Great stuff Markus! Nice fix! I did something similar with a MOTU 828 I got for €70 - one standard led (and appropriate resistor) pointed sideways at the screen and shes legible and usable again!

[@markusfuller]

Thats great to hear mCKENIC. I have repaired quite a lot of the old 2 line text displays that use the electroluminescent strip under the panel, just one bright LED and a strip of white paper or plastic seems to be enough to scatter the light nicely.

[@anton6280]

I always learn quite a bit from your videos. Thank you.

[@markusfuller]

Thank you Anton. I have learned a lot myself from watching other youtubers also.

[@PaulLemars01]

Hey Markus, I'm a new subscriber on the strength of this video. My son is a composer and he really likes using the old M-Audio Keystation 88 keyboards. We have 3 and two of them have their blue backlights dead and the third is on its way. You have shown me how to get them back and even change their color. I'm currently replacing the worn out USB2 socket on one of them so I think I'll dig a little deeper and deal with the display. Thank you so much for leading the way.

[@shimmyfix9315]

the signal sniffer is brilliant. subbed. now to fix the display on my Yamaha DJX.

[@markusfuller]

I had a DJX a few years ago I really liked it.

[@hendrahermawan1224]

Thank you for your video, very inspiring for my poor PSR 3000 LCD screen

[@mickguzauski6044]

Thanks for the tutorial. I recently bought a Yamaha DM-2000 at a low price. Good condition except for dead backlight. I repaired it using your tutorial and it works great now. Much better than spending 500 dollars on a replacement LCD module.

[@markusfuller]

Thank you Mick. $500 dollars is way too much for a replacement module.

[@FinanceRambling]

Great insightful video. You kept it really simple.

[@HeatyPNG]

You are a genius @markusfuller! I love your work and respect your expertise. Kudos!👍👍

[@ThomasGrillo]

Congrats on the re-light work. I can see... well, hear why you'd want to salvage that particular keyboard. Thanks for the video.

[@markusfuller]

Thanks Thomas, the sounds in this keyboard are far better than I thought they would be. Jason has already claimed it for his keyboard collection.

[@ThomasGrillo]

LOL. I figured he might do. :)

[@markusfuller]

ThomasGrillo Yes like he needs another keyboard LOL. actually I think he is going to use it to make sound sets for his yamaha styles packs.

[@rongarza9488]

I was able to replace the original backlight with a Harbor Freight flashlight's 5V LED strip and it's 100 ohm resistor. It is on and super bright now (maybe too bright). Thanks again for your video. (I strongly suggest downloading the free repair manual -- its excellent step-by-step details match the procedure Mark did here, also putting the many screws in a labeled 2-week pill box will remove any confusion on reassembly).

[@ISOTROPOSPHERE]

The explanation of the voltage regulator at 17 minutes plus was excellent, love your videos Markus.

[@larryelisha8170]

sorry to be so offtopic but does any of you know a trick to log back into an instagram account? I was stupid forgot my account password. I would appreciate any help you can offer me!

[@kylokingsley1299]

@Larry Elisha instablaster =)

[@larryelisha8170]

@Kylo Kingsley thanks so much for your reply. I found the site on google and I'm trying it out now. Seems to take quite some time so I will reply here later with my results.

[@larryelisha8170]

@Kylo Kingsley it did the trick and I finally got access to my account again. Im so happy! Thank you so much, you saved my ass :D

[@kylokingsley1299]

@Larry Elisha glad I could help :D

[@djeev1]

Only one word to discrib: Wondeful. Great job and thank you for sharing.

[@markusfuller]

Thank you Thomas

[@braselectron]

Brilliant tutorial. Thank you for sharing.

[@YouTubeSupportTeams]

Markus i'm only 18 mins in and already i've liked your video as they are always excellent

[@markusfuller]

much appreciated Cyberdyne Systems :-)

[@goodguy2627]

Excellent! Simply priceless!!! Thank you so much. I've been flirting with the same idea for some time now and you just confirmed that this is doable. I have a Roland VS 1680, a Roland MV-30, a Roland RA-800 and a Korg 01/W FD. I have had so much fun with these devices which sadly came to the end of the road due to display issues. Now I will blow a new life into all of them thanks to you. God Bless you my friend. Thank you so much 👍👍👍

[@MarshalArnold]

A very nice solution! Still needing to get my JD990 screen issue sorted, but will have to wait till after the move.

[@markusfuller]

Hi Marshal, If I lived a little closer I would have a look at it for you but I am a mere 6000 miles away. good luck with your move I lookforward to watching your synthe video’s .

[@MarshalArnold]

@@markusfuller wait, you haven't invented a teleporter yet? 😀 Thanks Markus, hey no sweat, always enjoy watching your repair vids! They will keep me occupied while my gear is packed away!

[@MimicoBungalow]

Noted the comment way down about not needing the 'caps' - I rather concur - since the 12 circuit on the board is likely nicely 'smoothed' out, anyway...but great video - you're VERY thorough!

[@DavidWatts]

Awesome mod, really enjoyed watching that.

[@markusfuller]

Thankyou David

[@DenverGamer]

Just wow, fantastic information

[@kemek3000]

I had no idea LED strips existed. Good stuff.

[@liaustria7790]

nicely done sir ...you have a subscriber im a musician myself and this is a great help thank you so much for sharing this ....

[@markusfuller]

Thank you very much

[@marinmatei4847]

Super video Markus!

[@sam_millen]

That demo mode is so fine.

[@mickymack1230]

Brilliant Video thanks Markus

[@JohnnyX50]

Yes the diode trick is cool, never gave that a thought although I should have guessed as they are used as detectors in AM radios lol. I had such a big smile on my face when you turned it on and it lit up for you and looked no different to its original function I guess :D Really glad it turned out good :D I have the reverse problem with an LED backlit PC monitor, I only had it a few months from new and the backlight has stopped working completely. I am still looking for a fix as I dont want to damage the screen if I go inside it. The monitor is passed it's warranty. I also want to retrofit LED to my old Iiyama 1024x768 monitor which is CCFL but still works though the colour has turned a warm sunset when in use. That monitor is years old lol but I still use it with a Socket A PC that has all my music software and keyboard drivers on it, also my midi files are on there and I havent switched it on in a few years as I want to clone the drives before anything happens to them.. Just havent got round to it lol Thanks for a great tutorial :D

[@mastertung7]

Excellent video very helpful,..now I see why the Roland fantom s display is not lit up,.it had the exact problem as this one,.thanks !!!

[@samdebubs]

Superb. Awesome video

[@RussCottier]

Great tip on the diode

[@RohiteshMishra]

Great video and very well explained 👏

[@superskier2]

Nice fix...I did a similar fix on my Alesis fusion, ccfl tube had gone, I disconnected the inverter and popped in some led strip, found 12v and she is as good as new.

[@markusfuller]

Brilliant. and the leds will last many years.

[@truthseeker3907]

Thank You Markus Fuller and Keep up the Good Work!! :) Thumbs up Indiana USA.

[@markusfuller]

Big thimbs up to you also :-) thank you

[@allankukuti7079]

Thanks you so much sir I'm really glad watching your video Because I have same problem with my keyboard psr-s900 Again Thanks to you...............

[@adriandavidchiapin7141]

Excelent ! You are a professional man.

[@markusfuller]

Thanks Adrian

[@nomadicvoyage]

your vids are very informative, makes me subscribed. thanks for that.

[@PWMaarten]

Great fix!

[@brunopinheiro4041]

Great video!!!

[@rupeshjha143]

एक नम्बर मेरे भाई बहुत अच्छा

[@Simon-ui6db]

Did this exact thing when my psr-s900 ccfl failed. But found the right ccfl after i'd done the mod. Need to do my Tyros as its fading a bit now.

[@doktoruzo]

great fix Markus

[@markusfuller]

Thank you Doktor Uzo :-)

[@josephneale10215]

Amazing fix on video as always

[@markusfuller]

Thanks Joseph

[@mohamedyousefforelectronic5550]

Nice work ❤❤

[@decomputerleraarable]

GREAT JOB! Rob

[@ThusithaThanthirige]

You are very innovative..Your overhead camera Concept is Great, Even some operation Theatures dont have?

[@whitesands928]

Ace job mate. 👍👍

[@aspectcarl]

The RSPCA of the keyboard world 😁

[@markusfuller]

Thanks Carl thats a real nice thought.

[@bassiclogic]

Brilliant!

[@MimicoBungalow]

I 'fixed' the LCD backlight with the 'cheapo' LEDs from some mini Christmas light sets from the local 'cheap store'...and for the power supply, I reused the guts out of a small power supply I had...The PSR-3000 is one of the BEST YAMAHA keyboards ever made...I have newer ones, but use the PSR-3000 EVERY WEEK at the church where I play!

[@LEONCITO913]

Beautiful, thank you

[@mohamededrees5832]

You r genis good work allwayes

[@SXTransmission]

I've watched many of your videos and especially enjoy the "keyboard that's ok apart from one thing that renders it unusable" fixes. In all of those I've not been too concerned about getting it apart and then back together again. This one however gave me the heebie heebie with that display buried away in there and all those connectors! Glad you met with such success. Please tell us why lowering voltage with resistors is not best practice. I mean if the 12v comes off a regulator, dropping it with resistors would be stable enough? Or is there more to it? Love your work.😀

[@ZElTGElST]

To lower it you need to do a voltage divider, which could dissipate too much power and maybe even break the main power regulator. Well, in the practice you could do that and get the thing working but using another regulator is way more elegant. Anyway I would love Markus to confirm that

[@hadireg]

Nice yt suggestion channel!!! Thanks Markus for sharing your skills!! new sub indeed!

[@MarcWeertsMusic]

Great job!

[@Russwig]

Great job! Best way to fix is to improve at the same time. Not sure why you need the caps if you are starting with 12VDC off of another regulator, not off a bridge from an AC source. One would assume the internal 12VDC buss is pretty smooth to begin with.

[@markusfuller]

Yes you are right the 12 volt source will be pretty smooth already but I guess Im so use to using these with caps that I just went ahead and included them as a matter of usual practice.

[@ChipGuy]

A very nice job well done. For that purpose you can purchase LED stripes on AliExpress "LED stripes for monitor backlight" for just a few quid. The ones I bought were 7 EUR and since they are meant to fit a 17" monitor I still have the cut pieces laying around. The displays I resurrect are not in as good shape as that Yamaha one. The plastic around the CCFL is usually degraded to flakes and totally gone. And since the liquid crystal in the display is also going I am faced with a total replacement and FPGA bases converters....Dunno if I want to spend that time.

[@markusfuller]

I too have many metres of the led strip, It’s so useful for many jobs, I’m pleased this was an easy fix (apart from the time it took)

[@ChipGuy]

@@markusfuller Oh I should have mentioned that those AliExpress LED light stripes are very narrow, like half the width of the reel type. Just a bit wider than the CCFL. So cutting them would not be necessary. However that was a very good idea and I didn't know that the layout makes that even possible. Looking forward to your next car boot sale item :)

[@markusfuller]

Chip Guy Vids Thanks for that information. I should have a look on aliexpress again as i have not been on there for a long time and somethimes theres some interesting gadgets.

[@clairecallaghan5546]

Hi Enjoyed the video, could I ask if you know the specific type of ccfl tube that is needed or the voltage operating range, i see some on line but not sure of what one to use thanks

[@torilsusegg9572]

That was amazing!

[@markusfuller]

many thanks Toril

[@ashishminj8344]

excellent dear

[@henrymoala7411]

Wow. How. Thank you

[@clydesight]

Great find and brilliant repair! I love those LED strips. I usually run them on a 9-volt battery! That keyboard sounds amazing too, of course, their demo would show it off in the best way. Would love to hear you play one of your original compositions on it though. Thanks for teh instructions about the little dropping circuit board. Very informative! Best wishes to you.

[@markusfuller]

Thank you Clydesight, I agree the demo’s are so well made even if you do not like the style they do show off the capabilities well.

[@samson8884]

@@markusfuller This is one of the best mid-range arrangers that Yamaha made. The sound quality was wonderful and also the build quality and buttons. Now they come with squishy rubber buttons, but the PSR3000 has hard plastic ones which were very responsive. My keyboard had the same backlight issue and i got it fixed. Not sure what they did to fix it, but I could see it dimming out again so I had to sell it off quickly. If only I had found this video earlier. A majority of PSR3000 keyboards have had display issues. I guess the display was the weak link in this model. Thanks for the great fix and for sharing it here. Could you perhaps add Yamaha PSR 3000 in the title so it's easier to find this video for those who want to fix this lovely keyboard and have fun playing it for a lot many years?

[@nikku0017]

Wow man thats amaizing....👌👌👌

[@markusfuller]

Thanks Nikku

[@Simon-ui6db]

Did this on a psr-s900 that was buzzing horrible due to the ccfl driver board going bad so did the led hack too.

[@RegebroRepairs]

More than two months!? I need a repair vide hit! It's so bad I had to make my own. :-)

[@ThusithaThanthirige]

What is in your Wrist Cable? Is it for a Static Voltage Defender?

[@husseinwg]

Good work. I thought the light key will not still working. Can this work apply to yamaha psr-700? Do I find the same voltages? Thanx .

[@MimicoBungalow]

I use small 'blobs' of a product called 'SHOE-GOO' (rubber repair' to hold down wires / put a little blob down, press the wires or ribbon cable into it - then a wee bit of masking tape over top until the rubber cement is set (5 minutes)...GREAT video...thank you...I have several elderly Yamaha's that potentially can benefit from your expertise!

[@TolgaBedirVideos]

great channel,just subscribed. also I fixed my keyboard, because engineers did not want to fix it, I really want to see your react🤣 you can watch a video about it (Ensoniq Ts-12)

[@user-hy6rl7ii7k]

Great video!!! Can you tell me if you have COB LED strip 12V and 5W. Do you still need a regulator or can you hook it direct to 12V?

[@geofreyphoneservices5036]

Hello can you help to know the source of upside down lcd on piano keyboard psr sx 700 it show vice versa

[@Taberannang]

Hey I have problem with my keyboard the sound cut sometimes when I play the key especially the when I play style any idea ???

[@MimicoBungalow]

I also used a 'cheapo' LED strip that I found at a local electronics / hobby shop. Yes, it doesn't 'dim - but the LDC is WAY more legible now...

[@arnolduk123]

That's a really neat trick with the diode at at 4:00. Thanks! If the CCFL circuit is now disabled, how does the brightness control still change the brightness of the LED's when they are now powered by DC ?

[@markusfuller]

I have a copyright claim from The Orchard Music on behalf of Comedy Central Records claiming that Yamaha's built in demo tune played at the end of the video belongs to them. I think I may have to contact Yamaha about this.

[@theprogrammerrolandmc3039]

That is shocking Mark with all the good work you do also promoting Yamaha in your video. I cant imagine Yamaha putting a track on their synth without having paid a license for the track in the first place. It is always the management and not the artist that goes after copyright. Unfortunately youtube Algorithm is dumb I have published music on routenote and uploaded the same track onto youtube only to get a copyright strike on my own music from youtube. So i got them told and white walled my music so i cant get any mor copyright strikes. But i dont put music on youtube now anyway as streaming is giving music away for free. Like Gary newman complained one song streamed 1 million times made him £37

[@GaitaPonto]

Sweet! And about your diode "signal tracer", would it detect low current signals as well? I was given a Novation Xio synth that is defective, it doesn't load the OS, can't be detected by a PC's USB bus so I am thinking about finding where the problem is through signal tracing. I only have the schematics to help.

[@markusfuller]

Hi there are special signal probes for oscilloscopes that have signal amplifiers built in but they are very expensive. but to be honest if your scope can go to very low signals i guess it could be possible to do the diode trick though i have normally only done this when sniffing for signals in high current signals. i must try it out and see how low i can go.

[@gurpalsingh5264]

Great video sir actually e i need a display of my keyboard fantom XA Roland can you arrange for me this display of any old keyboard thank you

[@saeedooo]

How can adjust brightness and make it low ? Yamaha PSR E463

[@NoelineCahill]

Hello Markusfuller, I have a Roland G 1000 and it is developing a problem with the LCD display in that the colour is fading from blue to a yellow brown and can hardly read it, it is strange that if I lean back I can see that the writing looks normal but leaning forward when I want to edit it looks pale I can hardly make it out, maybe it is only the light or something more serious, upon looking around to try to find a part for it I stumbled on your site, you know so much about the keyboards and you said you have a lot of them around I thought I would trouble you for some advice or you may have a part very willing to pay of course, as I can't a find a part anywhere and I am feeling sad that if the light goes out that's it, otherwise the keyboard is in great condition as I have looked after it with service etc. I am wondering if you can help as to whether you may stumble on a part for the Roland G1000 or if there is a generic or if another model can act as replacement, I also contacted Roland Corp with bad news as to a replacement, your help would be greatly appreciated hoping my request is not too much trouble await your reply Kind regards Noeline

[@fickfehler3866]

Can the same concept be used for a small 1" x 2" LCD backlight on a stereo front panel ? Instead of a strip I'd use only 2 LED's. The supplied pcb voltage is 4.7 V.

[@markymaclmb]

Dear Mark, I have a PSR 5700 Keyboard by Yamaha with a LCD screen display is lighting up but not able to read. Is there a replacement part for that I am trying to find on ebay but no luck. Someone else told me that it could be the capacitors for the LCD....The keyboard works fine just cannot read my parameters. What should I do?

[@ukaszszelongiewicz4099]

Hi Marcus, i have a question for you. If i wanna change old CCFL backlight to led i need just a led strip and voltage that will power them up ? If Led strip will be for 9 volts like your i need to just connect it somewhere where it will get 9volts ye? Greate video bro

[@NoelineCahill]

Hello Markusfuller, in further reference to my question below, that if the LCD on the Roland G1000 goes out I am wondering if you know would he keyboard work in general e.g. piano arranger section await your reply with thanks Kind Regards Noeline

[@rajnegi4052]

Nice and very hepfull video sir I have an issue with yamaha PSR s550. There is ni light on lcd and no sound Please help me to sot out this problem

[@gnarlysoundscapes7210]

While watching Game of Thrones tonight, I realized that Nikolaj Coster-Waldau looks almost exactly like you.

[@anoopsahal1202]

You need glasses

[@geofreyphoneservices5036]

@markusfuller can we have a little talk please about psr sx 700 lcd to shows vice versa

[@lalchakhongsai2202]

Sir. I have a Yamaha keyboard PSR S550 Demonstrate. The problem is not working LED on display and No Sound. So, Sir. Which one or what is the problems. Thanks

[@ElroyNeboSamuel]

Can we change a color display for psr s670